18316856 has 16 divisors (see below), whose sum is σ = 34389600. Its totient is φ = 9146304.

The previous prime is 18316849. The next prime is 18316867. The reversal of 18316856 is 65861381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10580 + ... + 12188.

It is an arithmetic number, because the mean of its divisors is an integer number (2149350).

Almost surely, 2^18316856 is an apocalyptic number.

It is an amenable number.

18316856 is a deficient number, since it is larger than the sum of its proper divisors (16072744).

18316856 is a wasteful number, since it uses less digits than its factorization.

18316856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3038 (or 3034 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 18316856 is about 4279.8196223673. The cubic root of 18316856 is about 263.6029768408.

The spelling of 18316856 in words is "eighteen million, three hundred sixteen thousand, eight hundred fifty-six".